package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.util.List;
import java.util.stream.Collectors;

/**
 * 员工管理
 */
@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     *
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
        //1.将页面提交的password密码进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2.根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //3.如果没有查询到则返回登录失败结果
        if (emp == null) {
            return R.error("未查到该账号，请联系管理员添加该账号");
        }

        //4.密码比对，如果不一致则返回登录失败结果
        if (!emp.getPassword().equals(password)) {
            return R.error("密码错误，请检查");
        }

        //5.查看员工状态，如果返回已禁用状态，则返回员工已禁用结果
        if (emp.getStatus() == 0) {//禁用
            return R.error("该账号已禁用");
        }

        //6.登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee", employee.getId());
        return R.success(emp, "登录成功");
    }

    /**
     * 员工退出登录
     *
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {
        //清理Session中保存的员工id
        request.getSession().removeAttribute("employee");
        return R.success(null, "退出成功");
    }

    /**
     * 新增员工
     *
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody Employee employee) {
        //设置初始密码，123456，需要进行md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        employeeService.save(employee);
        return R.success(null, "新增员工成功");
    }

    /**
     * 员工信息分页查询，支持局部刷新
     */
    @GetMapping("/page")
    public R<List<Employee>> page(int skip, int pageSize, String name) {
        //构造分页构造器
        Page<Employee> pageInfo = new Page();
        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getCreateTime);
        //执行查询
        employeeService.page(pageInfo, queryWrapper);

        List<Employee> records = pageInfo.getRecords().stream()
                .skip(skip).limit(pageSize).collect(Collectors.toList());

        return R.success(records,pageInfo.getTotal(), "操作成功");
    }

    /**
     * 根据id修改员工信息
     *
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody Employee employee) {
        employeeService.updateById(employee);
        return R.success(null, "员工信息修改成功");
    }

    /**
     * 根据id查询员工信息
     *
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id) {
        Employee employee = employeeService.getById(id);
        if (employee != null) {
            return R.success(employee, "操作成功");
        }
        return R.error("没有查询到对应员工信息", 0);
    }
}
